A boneless strip steak (also called New York strip or top sirloin) is one of the best cuts of meat for grilling in a cast iron skillet. A boneless strip steak cooks more evenly and quickly than thicker bone-in cuts, and it's easier to slice. Trim the excess fat around the edge of the meat before or after it is cooked. Season the meat well with salt and pepper and let it come to room temperature before it hits the hot skillet. Place the steaks in the skillet and let them sit so that they develop a nice brown crust. Then, baste the meat with a mixture of butter and pan juices to add richness and flavor. Finally, remember to use a meat thermometer to get the most accurate results.